JP2001258790A - Air dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air dryer which prevents an accident due to short circuit in an air blowing means from happening when water enters accidentally through a suction opening or a nozzle. SOLUTION: The air dryer is provided with a dryer main body 11 equipped with the nozzle 61 that blows air and suction opening 14 sucks air and a motor driven blower 31 which sucks air through the suction opening 14 arranged in the dryer main body 11 as well as blows out the sucked air through the nozzle 61. Water sensors 70, 80 for detecting intruding water in the dryer main body 11 are arranged in the main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air dryer in which air is blown from an outlet by an electric blower provided in a main body.

[0002]

2. Description of the Related Art Conventionally, there has been known an air type dryer for blowing air from an outlet of a main body.

[0003] Such an air-type dryer includes a main body having an air outlet for blowing air and an air inlet for sucking air, and an electric blower provided in the main body, and is driven by the electric blower. Air is taken in from the intake port, and the taken-in air is blown out from the outlet.

[0004]

Incidentally, in such an air-type dryer, since it is installed in a washroom or the like, water tends to enter by mistake from an inlet or an outlet. For this reason, there is a possibility that the electric blower (electric blower means) may be short-circuited.

The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent a short circuit accident of an electric blower means when water accidentally enters from an inlet or an outlet. An object of the present invention is to provide an air dryer that can be used.

[0006]

In order to achieve the above object, the invention according to claim 1 comprises a main body provided with an air outlet for blowing air and an air inlet for sucking air, and the main body provided in the main body. An electric air blower that draws air from a mouth and discharges the sucked air from the outlet, and a water detection sensor that detects that water has entered the main body. It is characterized by being provided within.

The invention according to a second aspect is characterized in that when the water detection sensor detects water entering the main body, power supply to the electric blower is cut off.

According to a third aspect of the present invention, there is provided a heater for warming air discharged from the outlet, and when the water detection sensor detects water entering the main body, power is supplied to the electric blower and the heater. It is characterized by blocking.

According to a fourth aspect of the present invention, when the water detection sensor detects water entering the main body, a power supply of a control circuit for controlling the electric blower is cut off.

According to a fifth aspect of the present invention, there is provided a regulator for converting a voltage output from a power supply circuit to a predetermined DC voltage and outputting the DC voltage, a fuse interposed between the power supply circuit and the regulator, and an overcurrent applied to the fuse. And a switch circuit for blowing the fuse by flowing the fuse, the control circuit, when the water detection sensor detects the water that has entered the body, by turning on the switch circuit and flowing an overcurrent to the fuse, the fuse is turned on. The power supply is cut off by fusing.

According to a sixth aspect of the present invention, there is provided a power supply circuit including the power supply circuit.
The electronic component and the circuit board constituting the 00V system high-voltage circuit are covered with a potting material.

The invention according to claim 7 is characterized in that the air-type dryer is of a table type.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air dryer according to the present invention will be described below with reference to the drawings. First Embodiment A desktop air dryer 10 shown in FIGS. 1 to 3 has a dryer body 11 and a dryer body 1.
1 and an electric blower unit 30 provided in the apparatus 1.

The dryer main body 11 has a lower case 12 and an upper case 13 mounted on the lower case 12.

The lower case 12 is formed in a housing shape, has an opening 12A formed in an upper portion thereof, and has a plurality of intake ports 14 formed in a rear wall portion 12B. A suction port panel 15 is detachably attached to the positions of the suction ports 14, and a plurality of suction ports 15A are formed in the suction port panel 15. An air-permeable porous filter FR is interposed between the inlet panel 15 and the inlet 14.

At the bottom of the lower case 12, a storage section 16 having an open top is formed.
A storage case 17 whose upper part is open is attached to a position separated from A.

A first circuit board 18 is mounted in the storage case 17, and the first circuit board 18 is provided with a strong electric circuit 130 (see FIG. 10) which will be described later.
The high-power circuit 130 is buried in the potting material 19 filled in the storage case 17, and the first circuit board 18
And the high-current circuit 130 is covered with the potting material 19.

A second circuit board 21 is provided above the storage case 17 and in the storage section 16 via a boss 20 provided in the storage case 17. A control circuit for controlling an electric blower 31 described later is provided.

The upper case 13 has an upper case portion 22 which is formed in an open lower surface, an operation portion 23 provided on the upper surface of the upper case portion 22, and a bulge which projects forward in front of the operation portion 22. Part 24. The operation unit 23 includes a power switch S1, a heater switch S2, and a continuous switch S3.
Are provided.

An elongated hole 25 extending in the width direction is formed below the tip of the bulging portion 24. Further, an infrared sensor 26 is attached below the bulging portion 24 and behind the elongated hole 25. The infrared sensor 26 includes an infrared light emitting diode 26D1 (see FIG. 10) and an infrared light receiving diode 26D2.

The upper case 13 has an electric blower unit 30
The electric blower unit 30 has an electric blower (electric blower means) 31 and a blower case 40 covering the electric blower 31 as shown in FIG.

The electric blower 31 has a centrifugal fan 32 and a motor 34 for driving the centrifugal fan 32 to rotate. The centrifugal fan 32 is covered with a fan cover 35 having a suction port 35 </ b> A, and the motor 34 has a plurality of exhaust ports 36.
A is mounted in a motor cover 36 having an A.
A rectifying plate 37 rectifies the air flowing in the direction of the arrow P1 by the centrifugal fan 32 and guides the air into the motor cover 36 as indicated by the arrow P2. Then, the fan cover 35 is inserted through the intake port 14 of the lower case 12.
The intake air passage 210 extends to the suction port 35A.

The blower case 40 has a fan case 41 covering the fan cover 35, a motor case 50 covering the motor cover 36, and an outlet 60 connected to the motor case 50 (see FIG. 3). ing. The fan case 41 and the motor case 50 are fixed to each other by screws N1 (see FIG. 5).

The fan case 41 has a cylindrical portion 42 located on the right side (in FIG. 4) from the suction port 35A of the fan cover 35. A cylindrical portion 43 having a larger diameter than the cylindrical portion 42 is continuously formed at the left end of the cylindrical portion 42, and the cylindrical portion 4 is formed.
An anti-vibration rubber 39 is disposed between the fan cover 3 and the fan cover 35.

The right end of the cylindrical portion 42 is closed by a closing plate 43, and a large number of air holes 44 are formed in the center of the closing plate 43 as shown in FIG. A pair of screw bosses B1, on the outer surface of the closing plate 43, is located above the plurality of intake holes 44 and sandwiches the plurality of intake holes 44.
B1 is formed, and a water detection sensor 70 is fixed to the screw bosses B1 and B1 with a screw N2.

A cylindrical holding portion 45 is formed inside the closing plate 43 so as to surround a number of intake holes 44. As shown in FIG. 6, the holding portion 45 has a plurality of notches 46 having a predetermined width at regular intervals, and has a comb-like shape. The height L1 (in FIG. 6) of the holding portion 45, that is, the length L1 in the front-rear direction (left-right direction in FIG. 4) is set shorter than the width L2 of the cylindrical portion.

A soundproof cushion member 47 made of porous urethane is provided between the cylindrical portion 42 and the holding portion 45. The soundproof cushion material 47 is formed in a donut shape.

The motor case 50 has a cylindrical portion 51, and a predetermined space 52 is formed between the cylindrical portion 51 and the peripheral wall 36A of the motor cover 36.
The air flowing inside flows through the exhaust port 36 </ b> A of the motor cover 36 into the space 52. The left end (in FIG. 4) of the cylindrical portion 51 is closed by a closing plate 53, and a connection port 54 is formed on the outer surface of the closing plate 53. The connection port 54 and the space 52 are provided on the closing plate 53. The air outlet 60 is connected to the connection port 54 through the exhaust hole 55.

The outlet body 60 has an outlet 62 having a slit-shaped outlet 61 formed at the end thereof, and a guide 63 for guiding the air sent from the connection port 54 of the motor case 50 to the outlet 61. are doing. Tip part 62 of blow-out part 62
A projects obliquely downward from the long hole 25 of the bulging portion 24 of the upper case 13. The outlet 61 is located inside the guide 63.
A water detection sensor 80 is attached so as to face the air outlet, and a heater 90 for warming air is provided at the connection port 54 of the motor cover 36, and a part of the heater 90 is provided inside the guide portion 63 of the outlet body 60. Projecting to And
The exhaust air passage 220 extends from the exhaust port 36A of the motor cover 36 to the outlet 61 of the outlet body 60.

As shown in FIGS. 7 and 8, the water detecting sensor 70 is formed by forming two conductive pattern electrodes 73, 74 extending in the longitudinal direction on the surface 72A of a rectangular substrate 72 and spaced apart from each other by a predetermined distance. It is. Substrate 7
2, a slit 75 having a predetermined width and extending along the longitudinal direction between the conductive pattern electrodes 73 and 74 is formed, and screw holes 76 are formed on both sides of the slit 75.

The water detection sensor 70 has a screw boss B1, B
Attached to one. The front surface 72A of the substrate 72 is separated from the closing plate 43 of the fan case 41 by a predetermined distance by the screw bosses B1 and B1, and as shown in FIG.
Numeral 2 stands upright with respect to the horizontal.

Since the water detection sensor 80 has the same configuration as the water detection sensor 70, the description thereof is omitted.
Also, the conductive pattern electrodes 83, 84 of the water detection sensor 80
The water detection sensor 80 is attached with the surface on which is formed upward.

FIG. 10 is a block diagram showing a configuration of a control system of the air dryer 10. As shown in FIG. In FIG.
Reference numeral 100 denotes a power supply transformer that steps down a voltage of 100 V to more than 20 volts.
A terminal is connected to a relay switch (on / off means) LR1 having two switches S1a and S1b, and the motor 34 is connected to the primary winding 100A of the power transformer 100 via the switches S1a and S1b of the relay switch LR1. Are connected between both terminals. Switches S1a and S1b are turned on and off in conjunction with each other.

A relay switch (on / off means) LR2 having two switches S2a and S2b is connected to both terminals of the primary winding 100A, and the heater 90 is connected via the switches S2a and S2b of the relay switch LR2. Is connected between both terminals of the primary winding 100A. Switches S2a and S2b are turned on and off in conjunction with each other.

Reference numeral 101 denotes a drive circuit for turning on / off the switches S1a and S1b of the relay switch LR1. The drive circuit 101 is driven when a drive signal is output from an output port Q1 of a CPU 200, which will be described later.
Is turned on.

Reference numeral 102 denotes a drive circuit for turning on / off the switches S2a and S2b of the relay switch LR2. The drive circuit 102 is driven to turn on the relay switch LR2 when a drive signal is output from the output port Q2 of the CPU 200. It has become. F1 is a fuse that blows when an overcurrent flows through the motor 34, and F2 is a fuse that blows when the temperature of the heater 90 exceeds a predetermined temperature. 1
03 is the secondary winding 10 of the power transformer (electronic component) 100
0B, a full-wave rectifier circuit, and a power transformer 1
00, relay switches (electronic parts) LR1 and LR2, drive circuits 101 and 102, and full-wave rectifier circuit 103 at 100V
A high-power circuit 130 is configured, and the high-power circuit 130 is provided on the first circuit board 18. The power transformer 150 and the full-wave rectifier circuit 103 constitute a power circuit 150.

The power supply transformer 100, the relay switches R1 and R2, the drive circuits 101 and 102, and the full-wave rectifier circuit 103, together with the first circuit board 18, are housed in the housing case 1.
7 is buried in the potting material 19. That is, the electronic components of the first circuit board 18 and the high-voltage circuit 130 are covered with the potting material 19, and even if water enters the storage case 17, each electronic component of the high-voltage circuit 130 is exposed to water. It does not soak.

Reference numeral 104 denotes a three-terminal regulator for outputting a low DC voltage of 5 V from the rectified voltage output from the rectifier circuit 103, and reference numeral 105 denotes a switch circuit for blowing the current fuse F3. The switch circuit 105 has a transistor TR. When the output port Q3 of the CPU 200 goes to H level, the transistor TR turns on. When the transistor TR is turned on, an overcurrent flows through the current fuse F3, and the current fuse F3 is blown.

Reference numeral 106 denotes an infrared light generating circuit that emits infrared light from the infrared light emitting diode 26D1, and 107 denotes a light receiving circuit that detects that the infrared light receiving diode 26D2 has received infrared light. The infrared sensor 26 is configured by the infrared generation circuit 106 and the light receiving circuit 107.

The input port T1 of the CPU 200 is connected to the conductive pattern electrodes 73 and 83 of the water detection sensors 70 and 80, and is connected to the three-terminal regulator 1 via the resistor R1.
04 is connected to the output terminal 104A. The conductive pattern electrodes 74 and 84 are grounded. When the conductive pattern electrodes 73 and 74 and the conductive pattern electrodes 83 and 84 are not short-circuited, a potential of 5 V is always applied to the input port T1.

The CPU 200 controls the drive circuits 101 and 102 based on the operation of the switches S1 to S3 and the light reception of the infrared light receiving diode 24D1, and the switch circuit 105 and the drive circuit 101 based on the detection of the water detection sensors 70 and 80. , 1
02 is performed.

The three-terminal regulator 104, the switch circuit 105, the CPU 200 and the like constitute a control circuit (light electric circuit) 140. The control circuit 140 is provided on the second circuit board 21.

Next, the air type dryer 10 of the above embodiment is used.
The operation of will be described.

When the power switch S1 is pressed, the CPU 200
Drives the infrared generation circuit 106 of the infrared sensor 26 to emit infrared light from the infrared light emitting diode 26D1.
Then, a hand or tableware is provided obliquely below the outlet 61.
The infrared light emitting diode 26D1
Is irradiated, infrared light is reflected by the hands and tableware, and the light receiving diode 26D2 receives the reflected infrared light. The sensitivity area of the infrared sensor 26 is set at a portion closer to the mounting surface on which the air dryer 10 is mounted.

When it is determined that the light receiving circuit 107 has received infrared light by receiving light from the infrared light receiving diode 26D2, CP
U200 drives the drive circuit 101 to turn on the relay switch LR1. When the relay switch LR1 is turned on, the motor 34 is driven, and the centrifugal fan 32 rotates.

By the rotation of the centrifugal fan 32, the air flows to the suction port 35A of the fan cover 35 through the suction port 14 of the dryer main body 11 and the suction port 44 of the fan case 41 as indicated by an arrow P0 (see FIG. 3). It is being inspired. This sucked air flows to the arrow P1 (see FIG. 4),
This air is rectified by the rectifying plate 37 and sent out into the motor cover 36 as shown by an arrow P2. The air sent into the motor cover 36 cools the motor 34 and passes through the exhaust port 36A of the motor cover 36 to the motor cover 3.
Air is exhausted to a space 52 between the motor case 6 and the motor case 50.

The air exhausted to the space 52 is exhausted from the exhaust hole 55 of the motor case 50 to the guide 63 of the outlet 60 through the connection port 54. And guide part 6
The air exhausted to 3 is sent to the outlet 61, and the air blows out from the outlet 61 to dry hands and dishes.

When the heater switch S2 is pressed, CP
U200 drives the drive circuit 102 to turn on the relay switch LR2. When the relay switch LR2 is turned on, a current flows through the heater 90, and the exhaust hole 5 of the motor case 50 is opened.
The air exhausted from 5 to the guide portion 63 of the outlet body 60 is warmed, and warm air is blown out from the outlet 61.

When the hand or tableware which is extended obliquely downward from the outlet 61 is retracted, the output of the light receiving signal of the infrared light receiving diode 24D2 is stopped, and the CPU 200 stops the driving circuit 101 for several seconds after the stop of the output of the light receiving signal. After driving 102, the driving is stopped. When the driving is stopped, the relay switches LR1 and LR2 are turned off, the driving of the motor 34 is stopped, the energization of the heater 90 is stopped, and the blowing of air from the outlet 61 is stopped.

When the continuous switch S3 is pressed, the motor 34 is driven regardless of the detection of the infrared sensor 26, and the air is blown out from the air outlet 61. At this time, if the heater switch S2 is turned on, the heater 90 is energized and the outlet 61
Warm air is blown out from. When the continuous switch S3 is pressed again, the driving of the motor 34 and the energization of the heater 90 are stopped.

If the air dryer 10 accidentally falls into a kitchen sink or the like and is immersed in water, the dryer body 11
Water enters through the air inlet 14 and the air outlet 61 of the air conditioner. The penetrated water short-circuits the conductive pattern electrodes 73 and 74 of the water detection sensor 70 and the conductive pattern electrodes 83 and 84 of the water detection sensor 80, and the potential of the input port T1 of the CPU 200 becomes zero.

When the potential of the input port T1 becomes zero, the CPU 200 determines that water has entered, turns on the transistor TR of the switch circuit 105 to blow the fuse F3, and drives the drive circuits 101 and 102. If so, the drive is stopped and the relay switches LR1 and LR2 are turned off.

The water detection sensors 70 and 80 are connected to the main body 11 of the dryer.
Is provided in the vicinity of the intake port 14 and the air outlet 61, the water that has entered through the air inlet 14 and the air outlet 61 is used by the motor 34 of the electric blower 31 and the heater 90.
Before the water reaches the relays LR1 and LR2 before water enters the motor 34 or the heater 90.
Can be turned off. Therefore, even if water enters the motor 34 of the electric blower 31 or the heater 90, the motor 34
And the short circuit of the heater 90 can be reliably prevented, and when the user puts his hand in the water in the sink in order to take out the air-type dryer 10 that has fallen in the sink, electric shock can be prevented. It can be reliably prevented.

Incidentally, the motor 34 is mounted on the motor cover 31.
And the motor case 50 and the upper and lower cases 13 and 12, it is very difficult to dry if water enters the motor 34. Therefore, even if the periphery of the motor 34 is dry, the inside of the motor 34 gets wet. It may be in a standing state.
In this state, if the power switch S1 is turned on, the motor 34 may be short-circuited or short-circuited. However, since the fuse F3 is blown, the three-terminal regulator 104
Does not supply power to the CPU 200. For this reason, even if the power switch S1 is turned on, the CPU 200 does not operate, and the relay switch LR1 remains off.
Is not supplied with a voltage of 100V. Therefore, the motor 3
A short circuit and a short circuit due to the inside of 4 being wet are prevented beforehand.

Further, even if the water entering the dryer main body 11 enters the storage case 17 of the storage section 16, the first circuit board 1
8 is covered with the potting material 19 together with the first circuit board 18, so that the high-power circuit 130 is not immersed in water. Also, it is possible to prevent the strong electric circuit 130 from being short-circuited. For this reason,
Electric shock and short circuit accidents can be reliably prevented.

Even if the air-type dryer 10 does not fall into a kitchen sink or the like, the air inlet 14 and the air outlet 61 of the dryer body 11 can be used.
Even if water enters by mistake, short-circuiting of the motor 34 and the heater 90 of the electric blower 31 and short-circuiting of the high-power circuit 130 can be prevented in the same manner as described above.

By the way, as shown in FIG. 9, the water detection sensor 70 has the substrate 72 mounted on the fan case 41 with the conductive pattern electrodes 73 and 74 on the back side.
Even if an electrostatically charged hand touches the air inlet 14 of the dryer main body 11, the static electricity causes the conductive pattern electrodes 73, 74 to touch.
Can be prevented from being short-circuited, and malfunction of the water detection sensor 70 due to static electricity can be prevented.

Further, since the surface 72A of the substrate 72 is separated from the closing plate 43 of the fan case 41 by a predetermined distance, even if water droplets adhere to the fan case 41 and hang down,
The conductive pattern electrode 7 of the water detection sensor 70 is
3, 74 can be prevented from being short-circuited, and malfunction due to water droplets such as dew can be prevented.

Further, since the slits 75 are formed between the conductive pattern electrodes 73 and 74 on the substrate 72 of the water detection sensor 70, dust is prevented from being accumulated between the conductive pattern electrodes 73 and 74. Short-circuiting of the conductive pattern electrodes 73 and 74 due to the accumulated dust is prevented. The substrate 72 of the water detection sensor 70
Are vertically mounted, so that dust is less likely to accumulate on both sides of the substrate 72, and the dust accumulated between the conductive pattern electrodes 73 and 74 is further less likely to cause a short circuit.

The water detection sensor 80 also has the same effect as described above because the conductive pattern electrodes 83 and 84 are formed on the upper surface of the substrate 72 and the slit 85 is formed between the conductive pattern electrodes 83 and 84. Obtainable.

Further, since the air-type dryer 10 is a table type, it can be freely carried, can be used in various places, and is very convenient to use. Second Embodiment FIG. 11 shows an air dryer 210 according to a second embodiment. The pneumatic dryer 210 according to the second embodiment has a water detection sensor 170 provided at a position facing a number of intake holes 44 of a fan case 41.

As shown in FIG. 12, the water detecting sensor 170 includes a plurality of conductive pattern electrodes 17 extending in parallel in the vertical direction on the surface 171A of the substantially rectangular substrate 171.
3 and a plurality of conductive pattern electrodes 1 extending between the conductive pattern electrodes 173 and extending in parallel in the vertical direction.
74, and a plurality of conductive pattern electrodes 17
3 are connected by a connection pattern electrode 175, and a plurality of pattern electrodes 174 are connected by a connection pattern electrode 176.

The substrate 171 has a slit 177 extending vertically between the conductive pattern electrodes 173 and 174.
Is formed, and the air sucked from the air inlet 14 is sucked into the air inlet 44 of the fan case 41 through the slit 177. That is, the slit 1
Numeral 77 forms a part of the intake air passage 210, and when air flows through the slit 177, the slit 177 is formed.
It is possible to reliably prevent dust from accumulating in the conductive pattern electrode 17 due to the accumulated dust.
3,174 can be reliably prevented from being short-circuited.

The water detection sensor 170 is
Similarly to the above, it is attached to the screw boss B1 with the surface 171 of the substrate 171 on which the conductive pattern electrodes 173 and 174 are formed facing inside.

According to the second embodiment, the water detection sensor 170 faces the large number of intake holes 44 of the fan case 41.
No matter what the state of the air dryer 210 is, that is, if it is submerged in the state of FIG. 11, or if it falls into a kitchen sink or the like in an upside down or overturned state. Also, it is possible to quickly detect the water that has entered the dryer body 11.

In the second embodiment, the water detecting sensor 17
0 is provided in the intake air passage 210,
It may be provided inside.

[0067]

As described above, according to the first aspect of the present invention, there is provided a main body having an air outlet for blowing air and an air inlet for sucking air, and air from the air inlet provided in the main body. And a motor-driven air blower for discharging the sucked air from the outlet, and a water detection sensor for detecting that water has entered the main body is provided in the main body. Therefore, when water intrudes into the main body by mistake, the water that has entered can be detected by the water detection sensor.

According to the second aspect of the present invention, when the water detection sensor detects the water that has entered the main body, the power supply to the electric blower is shut off. It is possible to prevent the electric blower from being short-circuited by water or from being leaked from the electric blower.

According to the third aspect of the present invention, there is provided a heater for warming the air discharged from the outlet, and when the water detection sensor detects water entering the main body, power is supplied to the electric blowing means and the heater. Since it shuts off, it is possible to prevent the electric blower and the heater from being short-circuited by water that has entered the main body, and to prevent electric leakage from the electric blower and the heater.

According to the fourth aspect of the present invention, when the water detecting sensor detects water entering the main body, the power supply of the control circuit for controlling the electric blower is cut off. It is possible to prevent short-circuiting of the electric blower due to water that has entered the inside, and to prevent electric leakage from the electric blower.

According to the fifth aspect of the present invention, a regulator for converting the voltage output from the power supply circuit to a predetermined DC voltage and outputting the same, a fuse interposed between the power supply circuit and the regulator, A switch circuit that blows a fuse by flowing an electric current.When the water detection sensor detects water entering the main body, the control circuit turns on the switch circuit to cause an overcurrent to flow through the fuse. Is cut off to shut off the power supply, so that even if the periphery of the motor is dry, it is possible to prevent a short circuit or a short circuit due to the inside of the motor being wet.

According to the sixth aspect of the present invention, since the electronic components and the circuit board constituting the 100V system high-power circuit including the power supply circuit are covered with the potting material, even if water enters the main body, the high-power The circuit is not immersed in water, thereby preventing a leakage from the high-power circuit or a short circuit of the high-power circuit.

According to the seventh aspect of the present invention, since the air-type dryer is of a desktop type, it can be freely carried, can be used in various places, and is extremely convenient to use. Become.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of an air dryer according to the present invention.

FIG. 2 is a perspective view of the air dryer of FIG. 1 as viewed from behind.

FIG. 3 is a cross-sectional view illustrating a configuration of an air dryer according to the present invention.

FIG. 4 is a cross-sectional view showing a configuration of an electric blower unit of the air dryer of FIG.

FIG. 5 is a rear view showing the electric blower unit of FIG. 4;

6 is an enlarged perspective view of a part of the fan case 41. FIG.

FIG. 7 is a plan view showing a water detection sensor.

FIG. 8 is a sectional view of the water detection sensor of FIG. 7;

FIG. 9 is an enlarged explanatory view showing a mounting state of a water detection sensor.

FIG. 10 is a block diagram showing a configuration of a control system of the air dryer.

FIG. 11 is a cross-sectional view illustrating a configuration of an air dryer according to a second embodiment.

FIG. 12 is a front view showing a water detection sensor according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Air-type dryer 11 Dryer main body 14 Inlet 31 Electric blower (electric blower means) 61 Outlet 70 Water detection sensor 80 Water detection sensor

Claims (7)

[Claims] 1. A main body having an air outlet for blowing air and an air inlet for sucking air, air is provided in the main body, and air is sucked from the air inlet, and the sucked air is discharged from the air outlet. What is claimed is: 1. An air dryer having an electric blower, wherein a water detection sensor for detecting that water has entered the main body is provided in the main body. 2. The air dryer according to claim 1, wherein when the water detection sensor detects water entering the main body, power supply to the electric blower is cut off. 3. A heater for heating air discharged from the outlet, wherein when the water detection sensor detects water entering the main body, power supply to the electric blower and the heater is shut off. The air dryer according to claim 1, characterized in that: 4. The power supply of a control circuit for controlling the electric blower when the water detection sensor detects water entering the main body. Air dryer. 5. A regulator for converting a voltage output from a power supply circuit into a predetermined DC voltage and outputting the same, a fuse interposed between the power supply circuit and the regulator, and an overcurrent flowing through the fuse to blow the fuse. When the water detection sensor detects water that has entered the main body, the control circuit turns on the switch circuit and causes an overcurrent to flow through the fuse to blow the fuse.
The air dryer according to claim 4, wherein the power supply is shut off. 6. The air according to claim 1, wherein an electronic component and a circuit board constituting a 100V high-power circuit including the power supply circuit are covered with a potting material. Dryer. 7. The air dryer according to claim 1, wherein the air dryer is a tabletop type.